易混淆的单词： Submarines

China has bought 12 russian kilo-class diesel attack submarines .

中国还购买了俄罗斯的12艘基洛级柴油攻击潜艇。

China is coy about its submarines .

中国的潜艇部队一直是保密的。

Vietnam has ordered six kilo-class submarines from russia .

越南已经从俄罗斯订购了六只基洛级潜艇。

Press reports say three submarines may follow .

新闻报导指出，三艘潜艇可能亦会列入订单。

Submarines are on the cards too .

潜艇也在洽谈范围中。